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Finding the Fourth Proportional to 2,862.02, 4,293.06 and 1,939.40

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Solution

The fourth proportional to 2,862.02, 4,293.06 and 1,939.40 is: 2,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.02 : 4,293.06 = 1,939.40 : x
  2. Step 2: Convert to fraction form
    2,862.02/4,293.06 = 1,939.40/x
  3. Step 3: Cross multiply
    2,862.02x = 4,293.06 × 1,939.40
  4. Step 4: Simplify right side
    2,862.02x = 8,325,960.56
  5. Step 5: Solve for x
    x = 8,325,960.56/2,862.02
  6. Step 6: Final answer
    x = 2,909.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.